Unsupported Browser
The web browser that you are currently using is no longer supported, and as such features of this website may not work as expected. We advise you to update to a currently supported browser (such as Chrome, Edge, or Firefox) to improve your security, speed, and overall experience.
We currently have this product in stock and available for dispatch.
Stock Location
| UK Distribution Hub: | 20+ |
"Get it" shows the next available date that we will be able to deliver this item to you on, depending on the delivery option you select, and the stock availability of anything else that you add to your shopping basket.
3-year warranty & 50-day money-back guarantee included
If you decide your order isn't suitable for any reason you can return it - just let us know within 50 days of receiving it. Please keep hold of all the original packaging until you're sure you want to keep the order.
Eligibility for Money Back Guarantee
Important: For hygiene and software licensing reasons, some items are only eligible for our Money Back Guarantee if they are returned to us unused and sealed in the original packaging with all software still "unregistered." Details of exclusions are shown within the product descriptions. Products include:
- Monitors and Headphones
- Earplugs and Ear Protection
- Reeds and mouthpieces for woodwind and brass instruments
- Mouth and Lip-Care Products
- CDs, DVDs and Software
We can collect your return for a small fee, or you can send it back to us yourself. The collection fee can be found in the returns information on each product's page on Gear4music.
In the unlikely event that any item in this order is faulty, damaged or incorrect on receipt, notify us within 14 days and we'll arrange a free collection.
When returning an order please ensure products are appropriately packaged and protected, to prevent them from getting damaged.
This table provides an overview of your statutory consumer rights, compared with our standard returns policy and optional extended money back guarantee and warranty.
| UK & Europe | EU Standard | Gear4music Standard | Gear4music Optional |
|---|---|---|---|
| Return Period | 14 days | 50 days | up to 180 days |
| Standard delivery charges refunded? | Yes | Yes | Yes, up to 30 days |
| Upgraded delivery charges refunded? | Standard costs only | Standard costs only | Standard costs only |
| Free collection on cancellation | No | No | Yes, up to 30 days |
| Free collection if defective, delivered damaged or incorrect item | Yes, within 14 days | Yes, within 14 days | Yes, within 30 days |
We are unable to accept returns of any custom made items designed to work together as a unique package and some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging. For full information on our returns policy, please refer to our returns and refunds information guide.
Pay with Klarna
Get more time to pay with Klarna
Split the cost into 3 equal monthly payments - interest free
Klarna's Pay in 3 / Pay in 30 days are unregulated credit agreements. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+. Subject to status. Late fees may apply. Ts&Cs apply.
Key Features
The PLC21 Passive Line Combiner by Lambden Audio is perfect for musicians and audio professionals seeking reliable signal mixing in studios or live environments. This passive, single-channel unit combines two balanced XLR inputs into a single output, making it easy to merge sources like microphones or instruments. Built with durability in mind, the PLC21’s die-cast aluminium housing is prepared to endure rigorous studio sessions or heavy touring schedules.
The PLC21’s design includes a transformer that isolates each input and output, ensuring crystal-clear audio and protecting against interference. Plus, the earth lift switch lets you eliminate unwanted noise on demand, offering an even cleaner output. With no power required, this versatile unit is ideal for dynamic microphone combinations, from percussion to choir arrangements and more.
Product Ref: 313735
The PLC21 is designed to combine two balanced XLR inputs into one output, making it ideal for seamlessly merging multiple dynamic mic signals into a single audio channel. Whether you’re recording in a studio or capturing live sound, this feature enables easy pairing of two audio sources, reducing setup complexity and allowing you to achieve the sound balance you need with minimal hassle.
Use the PLC21 to create rich, layered audio from a single output, with dual-micing setups for vocals, percussion, choirs, or instrument amplifiers.
The PLC21 ensures pristine audio quality with transformer-isolated inputs and outputs, which prevents unwanted signal interference. This built-in transformer keeps each channel fully isolated, so you get clean, reliable sound without bleed between channels, regardless of your recording or performance environment.
This isolation is particularly helpful when combining mic signals from different sources, giving you pure, uninterrupted sound every time.
Audio quality is further enhanced by the PLC21’s earth lift switch, which lets you eliminate hum or ground loop noise that can sometimes interfere with recordings. This feature is especially useful in live sound or mobile setups where noise issues are common.
Simply engage the earth lift to immediately clean up your signal, giving you greater control over sound quality without needing extra equipment.
The PLC21 is crafted from die-cast aluminium, a material chosen for its strength and durability under pressure. Built to Lambden Audio’s high standards, this line combiner is ready to handle the demands of both frequent studio use and rugged live environments.
From busy touring schedules to everyday studio setups, you can rely on the PLC21 to deliver consistent performance, time and again.
